Mixing apparatus



sept. so, 1924. 1,510,165

' R. M. TEMPLE MIXING APPARATUS Filed Feb. 15.

1924 2 sneerrsnqe. 1

sept. 3o 1924.

` R. M. TEMPLE MIXING APPARATUS Filed Feb. 15. 1924 2 IIH I HHI Il enemascanso, 19241. Y UNITED STATES 1,510,165 PATENT olfr'lcm.'A

. maaar n. TEMPLE, or rinmmvama.

MIXING- APPARATUS.

fpplication led February 15, 1 924. Serial No. 692,981..

' as to impart a loop-like motion to its contents during agitation, so-as to direct said contents into engagement with the agitator` pelements.A A further object isto provide a mixing receptacle havingmeans constructed to resistany tendency oi the end walls to bedrawntogetherv during operation oi the agitator elements. A Jfurther objectis to provide an agitator member having means for carrying Ythe minableingredients first to one4 end or the receptacle, and then to the otherend, Aand to follow this reciprocating ,movement by equalizing thedistribution ot said ingredients before another reciproca tion takesplace. A further object is to pro vide mixing elements so arranged as tohave a direct sweep and rubbing tendency dinal sectional view. et

from one extreme ot/,the receptacle to the other. A further object is toprovide means for preventing accumulation oi the mixable materialsaround the shaft bearings contignous to the ends ot the receptacle,thereby insuring more sanitary conditions and adding to the lite of theparts. A further objectis to'provide a cover constructed to preventthecontents trom being thrown out while the mining element is in operation,and' particularly during the period that the receptacle is being movedto dumping position.- A `further object is to provide a mixingreceptacle having a stung box constructed to prevent leakage around theagif' tator.

claims..

lin the accompanying drawings yFigures 1 and 2 are transverse sectionalviews, viewed in opposite directions illustrating a mixer constructed inaccordance with the invention. lligure 3 is a longituiligures d and 5are side views ot the beater taken at right angles to each other. Fi e 6isa sectional 'view of one of the spi er arms.

Referring to the drawing, 10 designates l the casing or mixingreceptacle constructed to receive the ingredients to. be mixed, and 11is a shaft extending longitudinally through the receptacle, and havingits ends projecting' through the end walls 12, said shat being rotatablymounted in suitable bearings 13. 1t will be noted that the bottom 14 ofthe casing lis approximately semicircular in cross-section, and mergesinto the front and back walls of the receptacles. The bearin 13 are sodisposed that the axis of the sha 11 is eccentrically located withrespect to the center of the arc of curvature of the bottom, said shaftbeing thus closer to the front vthan to the bach.

Keyed or otherwise secured to. the shatt 11 are iders 15, 16, each oiwhich is profvided wlth a suitable hub 17. .The spider 15l is ofapproximately 'lV-shape and the spider 16 is oi approximately Y-shape,the two spiders being so mounted upon the shaft that the arms 151i and16 lie opposite each other while the arms 15" and 16", and the arms 15cand 16c are staggered'with respect to each other, as will be moreparticularly noted ,trom the drawings. The outer ends of the arms 15b,15, 16", and 16e are provided with suitable bosses v18, to receive theends ci the beater rods, one beater rod 19 connecting. the arms 15b and1li and the other beater rod 19n connecting the arms 15 and idc. 'lhusit will be observed that the beater rods are in an inclined positionrelative vto the axis ot' the shalt, and also with respect to thelongitudinal walls oir'- the casing. Rotatably mounted in the ends ofthe arms 15 and 16 is a rubber rod 20, said rod extendin parallel withthe shalt 11. @ne end wa oi the case is provided with an openingnormally closed by a plug 21, which may be removed to permit removal andreplacement of the rubber bar 20, when occasion requires. 2 l

lilach arm oi the several spiders 15 and 16 is provided with a scraper22, which consists oi a lip extending trom the forward edge ofthe arm tothe contiguous end wall ot the casing, and curved inwardly contiguous tothe hub 17. The function ot the scraper is to hee the end walls cleanand clear ot the mixa le materials which might otherwise adhere thereto,so that said mate.-

titi

lll@

rials cannot work down into the bearings where they will ferment anddisoolor, and

, eventually eat away equa the drawing,

-into the curvature of the the rear Wallis provided anl overhang at itsupper edge.

the metal parts of the tank or casing and other contiguous parts ofthemixer. The scrapers also.tend, to reduce friction because the endmotion tor against the walls of the tank is reduced to 'a minimum, andyetthe device has the same cleaning and scraping tendency as thou h the'thickness of the entire spider edl that of tlie spider and scraper.

The erid wallsof thetank or/casing are curved at their upper edges asindicated in a portion of the rear wall belng also curved-at23 tograduallymerge top edges. -Thus with somewhat Aof Slidably supportedbythe top of the 'receptacle is a cover 24, conforming. to the curvatureof the end walls, saidcover being somewhat Wider than the top opening ofthecasing.

vThe forward movement of thecove'r is limit- `ed by a lip 25 carriedv thereby, engaging an abutment A,strip 26 carried by the overhanging topedge of the. rear wall. When 1n 'closed position a substantial portionof the cover overhangs the front wall of the casing. The'casiug may bemounted in any of the ways well-known in the art.l For eX- ample, thebearings of the shaft may be supported by standards 30 extendingupwardly from a base 31, rotation being imparted to the shaft by meansof a motor 32, geared to the drive wheels 33, which are secured to theshaft 11. The drive shaft 34 is'driven by a sprocket gearing andthroughan intermediate gearing 35, operates the drive pinions 36, whichmesh with the wheels 33.

The vreceptacle may be tilted in any suitable or well-known manner. Forpurposes of illustration the dumping apparatus may consist of acountershaft-37, provided with worm'sections 38, which mesh` with wormpinions 39, screwed to the hub "40 and mounted to rotate iu suitablebearings`41.

cient to indicate the same dia' vmotor 45, the action of shaft Workingon the threaded portions o f the respect'ive shafts 39 are travelers 42,to e'ach of which is pivotally connected one end of a link 43, the otherend of each link being pivotally connected to a suitable lug 34, securedto the case of the receptacle. The counter shaft is driven by anindependent which is controlled by a reversible motor switch 46,automatically operatedy bythe action ofthe tank at either extreme pointof its movement. Devices of this `kind are well known and no attempt: ismade to illustrate the detail structure thereof, it being consideredsui'- atically. prevent leakagearoun -the agitator a novel stuffing-boxis employed. The ends ofthe shaft 11 extend through stufflng boxes eachformed of two separated of the agitasleeves 50, encircling the shaft,and having- -a flange 51. The contiguous ends o f the sleevesareseparated, and in the s ace between them is laid a plurality ofelically disposed strips of packing 52, which contact with the shaft.Compression is brought against the ends of the packing by means ofadjustable clamp rods 54, engaging the flanges 51. A suitable oilopening 4for lubrication purposes, as indicated at 55, is provided. i Inoperation, the ingredients to be mixed are placed in the tank 10 in theusual and ordinary way. It will be assumed for instance that a batch hasbeen introduced for mixing bread dough. As the shaft rotates, therespective beater rods and the rubber rod approach closer to the frontwall than to the rear wall by reason of the eccentric mounting of theshaft. A forward rotation is imparted to the shaft by the motor. As theshaft rotates, the beater rod 19, engaging the contents of thereceptacle will carry the mixable ingredients toward the right hand endof the casing, and this action is followed immediately by the action ofthe beater rod'19 which tends to move the contents in the otherdirection. This reciprocable movement is followed immediately by theaction of the rubber rod 20, which functions as an equalizer, tending tospread the ingredients evenly and acting somewhat to roll or spread outthe in edients lyingbetween it and the rear wa of the casing.

The rotation of the actuator first works the various ingredients into auniform granular condition and then by their continued rotation in acentrifugal horizontal position `will rubthe mass right, left, andstraight, bringing abou-t a thoroughl incorporated glutinous highlydevelo vmass, with friction reduced to such an extent that it eliminatesthe necessity of using cold air blasts or refri eration appliances. Thisis made possible-:by the vagitating bars taking hold of the mass inlarge portlons and rubbing it or draw' 0' 1 thin portions wlith propercreating undue friction. considerable portion of the mass is caused torotate with the beaters, and the overhanging portion of the back wallguides the mass to a position where it will drop back into .engagementwith the agitator. Durin operation of the heater the Scrapers 22 wilremove any of the ingredients which tend to adhere to the end walls,keeping said walls substantially clean and preventing an accumulation ofdough or other ingredients. )Thus the ingredients which would4ordinal-i1 produce an unsanitary condition, if left adhering to the wallyare prevented from accumulating, and deterioration of the parts istherefore prey and it becomes necessa When the mixing operationv iscomplete.

tents of the casing, the atter may be tilted by the mechanism described-for'the purpose,-

the cover moving with the receptacle so that it is suspended from theabutment strip. 'Ihus the receptacle will remain closed, so that thebeaters may not throw the contents of the receptacle out of the topduring the `he dumping movementhas been initiated bedumping operation,as often happens when gore arresting movement of the beater shaft.

Y The top may then be moved back so as to lid expose the contents andpermit completion ofthe dumping operation.

With respect to the stuiling box, experience has demonstrated thatstuliing boxes of the type commonlyh used on mixing machines are veryunsatisfactory. By means of the stumn box herein described, with thepacking lsposed helically around the shaft, either right or left handaccording to which. end ofthe shaft it is on` the rotation of the shaftserves to carry the lubricant around so as to maintain a contact withthe packingy and prevent it from becoming hard. At the same time itprevents the liquid contents of the mixer from coming out around theshaft.A By tightenin the rods'54 to bring the sleeves tow-ar each other,the packing" strips are ,forced into close engagement with the shaft,-maintaining a tight joint.

Having thus explained the nature, of the invention and described anoperative manner of constructing and using the same, although withoutattempting to set forth all of the forms in which it ma be made, or allof the forms of its use, w at is claimed iszl. In a mixer ofthecharacter described a rotatably mounted actuator having` beater meansfor imparting alternaterecipro'cating movement to the mixable materials,and also having means independent of the Kbeater means for applying a`flatteni pressure to said materia 1n a piane para el with the axis ofthe actuator. l'

2. In a mixer of the character described a rotatably mounted actuatorhavin beater means for imparting movement to -t emix- 'mf-able materialsin one direction, and then movement in the other direction, and alsohaving means independent of the beater means for subsequently applying aiattening pressure to said materials in a plane parallel with the axisof the actuator.

3. In a mixer of thel character described a rotatable shaft, spiderslcarried by said shaft, inclined beater bars connecting said spiders anda rubberbar having its ends .mounted-p in said spiders independently ofthe beater- 4. In a mixer of the character described a shaft, beaterbars inclined with respect to sadshaft and a. rubber bar parallel withto dumpthe con-- said shaft and mounted independently of the beaterbars. I Y n i 5. In a mixer 0f the character described, a shaft, rigidlysecured beater bars rotatable with said shaft' and inclined with respectthereto and a rubber bar looselymounted independently of said beaterbars and also rotatable with said shaft and lying parallel therewith. f

6. In a mixer of the character described, a shaft, spiders snred theretoand provided with radiating arms, one arm of each spider beingpositioned opposite an arm of the other spider, the remaining arms ofthe respective-spiders -being staggered with re-l spect to each other,beaterfbars connecting the said arms, and a rubber bar carried by the 0positely disposed arms.

` 7. ln a mixer of the character described, a-shaft, a T shaped spideron one end of said shaft, a Y-shaped spider at the other end of saidshaft, the dependent ends. of the respective spiders being disposedopposite to each other, a rubber bar carried by the oppo-- sitelydisposed arms, and inclined beater bars connecting the ends of the otherarmsI of the respective spiders. l

8. In a mixer ofy he character described, a

shaft, a T shaped s ider secured to one end of the shaft, a Y- apedspider secured to the other end of the shaft, the main stems of saidspiders Vbeing disposed opposite to each other, a rubber bar looselyYmounted in said main' stems, and inclined beater' bars connecting theother arms of the spiders.

loo

9. ,In a mixer ofthe character described.

a shaft, spiders havingradiating arms, one

arm of each spider being positioned opposite y to an arm of the otherspider, the remaining arms of the spider being staggered,bars'connecting the staggered arms to the respectivespiders, a rubberbar carried by the oppo- Sitely disposed arms, and scra rs carried by4the forward edge of each spi er arm.

l0. Ina mixer of the character described a rotatably mountedactuatorhaving beater means or imparting alternate rec1procating movement to themixablermaterials, and also having means independent of the beater meansfor applying a liattening pressure to said materials in a plane parallelwith the axis of the actuator, and Scrapers carried bythe ends of theactuator. v

11. A mixer of the character described comprising a casinghaving abottom of semicircular form in cross section, a rotatably mountedactuator located within the Y casing and disposed eccentricallyyvithrerespect to said bottom, said actuator having beater means forimparting reciprocations to the mixable materials within the., casing,',

and also having means independent"of the beater means for applying aflattening pressure to said materials in a plane parallel with the axisof the actuator,

v mounted within said casing,

y resting upon said end walls of the casing and carried by said spiders.

comprising a casing having a rear wall pro vided with an upwardly curvedportion, and

an actuator rotatably mounted within said casing and having means forimparting reciprocating movements to the` mixable materials within saidcasing, and also having means independent of the beater means forapplying a ilattening pressure to said'materials in al planeparallelwith the axis ofV the actuator, a -curved portion of the rear Wall ofthe casing being positioned to over hang the actuator. 13. A mixerofthevcharacter described comprising a casing, a shaft rotatably spiderssecured to said shaft and having angularly bent edges forming Scraperscontacting with the agitating means 14. mixer. of the characterdescribed comprising a tlltable casing having curved supporting means, acurved cover slidably supporting. means, means limiting the forwardmovement of said cover during tilting movement of the casing anda beaterlocated within said casing.

15. A mixer of the, character described comprising a casing havingcurved su porting means, a curved cover slidab y mounted in saidsupporting means,I means limiting the forward movement of said cover, abeater located within said casing, said cover being of sufficient Widthto provide a substantial portion overhanging the front Wall of thecasing when in closed position.

16. A mixer of the characterV described comprising a tiltable casing, acurved cover slidably resting on said casi and rovided with a-Hange atits rear ge an an abutment strip on said casing complemental to saidflange and cooperated therewith to form a Stop to prevent slidingmovement of the cover during tilting movement of the casing.

In testimony whereof I have hereunto set m hand.

y ROBERT M. TEMPLE.

